tillion



(No Model.)

W. R. R TILLION.

GUIDE TRACK FOR SLIDING DOORS.

No. 307,078. Patented Oct. 21, 1884.

UNITED STATES PATENT OFFICE.

WILLIAM R. R. TILLION, OF BROOKLYN, NEW YORK.

G UlDE-TRACK FOR SLlDlNG oooRs.

E'ZECIFICAI'ION forming part of Letters Patent No. 307,078, datedOctober 21, 1884:.

Application filed September 5, 1884.

To all whom, it may concern.-

Be it known that I, WM. R. R. TrLLroN, of Brooklyn in the county ofKings and State of New York, have invented certain new and usefulImprovements in Guide Tracks for Sliding Doors; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable othersskilledinthearttowhichitpertainstomake and use it, reference being hadto the accompanying drawings, which form part of this specification.

My invention relates to an improvement in guide-tracks for slidingdoors; and it consists in, first, the combination of the double trackand a spring-actuated central rail, with the sliding door provided withrollers having raised portions, so that said rollers bear upon both theside tracks and the central rail, the central rail being depressed belowthe level of the side tracks when the door is upon it, but which risesto the level of the floor when the door is open, substantially as shown;second, the combination, with a sliding door, of the side rails havingbrackets secured to their under side, a central rail having dependingguiding-pins which extend through the brackets, and springs for forcingthe rail to its normal position when the door is open, all of which willbe more fully described hereinafter.

In the accompanying drawings, Figure 1 is a side elevation, partly insection, of an apparatus embodying my invention which is adapted to beapplied to a sliding door. Fig. 2 is an enlarged detailed sideelevation, part-1y in section, of one of the sections of my track. Fig.3 is an enlarged detail cross-section of the same.

A represents a sliding door which is provided with rollers B, on itslower edge, in the usual manner. These rollers are each provided with acentral shoulder,.(), and thus the rollers have three bearing-surfaces,D, E, and F, as shown in Fig. 3.

G represents the track upon which the door slides, and which is formedin sections. These sections consist of the bearing-rails H, which aremortised into the floor so as to have their upper sides on alevelwith'it, and thus present no unsightly or inconvenient obstruction, suchas is now rendered necessary by the sliding doors in common use. Inbetween these rails H is placed the rail I, from which (No model.)

dependthe guide-pins K, which extend through the bearing-brackets L,that are secured to the 5 5 under sides of the rails H. Springs M areplaced upon pins K, and bear between the under side of the rail I andthe upper side of the bearing-brackets, and thus keep the rail Inormally at the upward limit of its movement and flush with the rails H.The outer ends of the rail I are curved downwardly, asshown,

so as to permit the rollers B to be easily mounted thereon when the dooris moved. so

as to cause it to roll upon the rail I.- The bearing-surface D oftherollers bears upon the rail I and depresses it, and the surfaces Eand F of said rollers bear upon the rails H. WVhile the door is closedthe rail I is forced downward, but when the door is open the springs Mraise the rail I up to the level of the rails H, and thus avoidpresenting an obstruction to the floor, and leave no recess which isliable to become filled with dirt and trash.

A track for sliding doors thus constructed 7 5 will be found exceedinglycheap, simple, and serviceable, and presents obvious advantages over theprojecting tracks which extend above the level of the floor that are nowin common use.

Having thus described my invention, I claim 1. The combination of thedouble track,and a spring-actuated central rail,with the sliding doorprovided with rollers having raised por- 8 tions so that said rollersbear upon both the side tracks and the central rail, tl1e central railbeing depressed below the level of the side tracks when the door is uponit, but which rises to the level of the floor when the dooris 0 open,substantially as shown.

2. The combination, with a sliding door, of the rails H, having thebrackets L, secured to their under sides. rail I, secured between therails H, and having depending guiding-pins 5 which extend through thebrackets L, and springs M, for forcing the rail I to its normal positionwhen the door is open, substantially as described.

In testimony whereof I affix mysignature in T00 presence of twowitnesses.

JAMES F. MOOANN, HY. FRANKLIN.

